It depends if the oils can be burned or not. If the oil were synthetic, I would say no, because I feel that a lot of synthetic oils are toxic. Instead, use pure natural oils that we have. Natural oils can be used in candle burners or electrical ones where the oil is placed on a heating pad. However, to get the most oil from a plant, do not heat the oil. When you heat the oil it alters the chemistry. But if you just want to make your house smell nice and you are using real oils, you certainly will still get some of the benefits of the plant. If you are using the oil for ailments, such as respiratory distress, then it is better not to heat the oil. I found even in those little candle-type burners, if you put water in them and add a few drops without heating it, the aroma molecules do come out in those spaces, which are helpful.
